Got a Mac and use Firefox yet when using it you got painfully slow internet speed? All of the sudden Firefox on Mac runs and loads pages considerably slower?. Many Mac users have this issue particularly when using Firefox  latest version including me. My Firefox  crashed several times  and run extremely sluggish. I also discovered that that Activity Monitor showed Firefox as often using over 100% of CPU. I wonder too myself “why is my Mac so slow connecting to the internet?” What puzzled me was that I had no problem at all with the two other browsers installed on my Mac ; Google Chrome and Internet Explorer. While Firefox is definitely  one of my favorite browsers given its tons of very useful add-ons ever since I switched to it from the Internet Explorer I noticed  it gets slower over time on my Mac and takes up large memory space. What made freak out it also sometimes made my computer so slow, the mouse moved in jerky motion. I wondered “why is my Mac so slow? After doing some Googling and asked my fellow Mac forum  members for their opinions  finally I came up with the following solutions to the many called Firefox so slow on Mac problem.

Perform A Disk Repair. Use Disk Utility to perform a Disk Repair, (if you do not know how to that  click here  to find out ), while booting up on your install disk. Using Disk Utility’s Disk Repair will not do the magic by solving  all the problem and it is possible it does not find or fix  all directory-related  problems.

Clear your browser cache. To clean up Firefox cache , go to —> Tools –> History–> Clear History, when prompted with a small Windows telling if you want to clear history and cache within specific time range, choose Everything. Or you can use a third party software which not only can clean up browser cache but also get rid of your computer from junk files such as CCleaner.

 

Fix Slow Firefox on Mac

 

Update you Java and Adobe Flash player. Outdated Java and flash player might slow down Firefox performance so it is highly recommended you download the latest update.

Start Firefox in safe mode. When you run Firefox in  safe mode all the add-ons will be disabled, enabling you to tell if the slow Firefox on Mac  problem in fact has to do with the installed add-ons. To start Firefox in safe mode click on the the Firefox button located at the top of the browser, go over to the Help menu and select Restart with Add-ons Disabled. You may also activate Firefox’s safe mode pressing down the shift key while starting Firefox. If , after starting Firefox in safe mode the browser runs without lag then you may safely conclude the Add-ons is to blame. Proceed to the next step to disable Firefox Add-ons

Disable unneeded extensions and add-ons. Excessive add-ons and extensions may also reduce Firefox load time and response considerably. To disable Firefox extensions go to  Tools —>Add-ons, check the installed add-ons  and disabled unused ones.

Those are basically the steps to fix slow Firefox on Mac problem. If after implementing the above instruction your Firefox is still so slow on your Mac , try uninstalling it completely, clean up your registry and reinstall a fresh copy of the latest Firefox.

 

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